I thought it could, but I don't see how to do it. I have a polycom video conferencing unit which talks H.323 and H.320 (which is ISDN) It has an IP address, and I can see it with a standard H.320 client, but I can't figure out how to get it to call into a sametime meeting or get sametime to call it. I am sure this nearly worked once before and I was hoping it would actually work in 7.5.